/*
 * Copyright 2017-2023 original authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.micronaut.docs.config.converters;

// tag::imports[]

import io.micronaut.context.annotation.Prototype;
import io.micronaut.core.convert.ConversionContext;
import io.micronaut.core.convert.ConversionService;
import io.micronaut.core.convert.TypeConverter;

import java.time.DateTimeException;
import java.time.LocalDate;
import java.util.Map;
import java.util.Optional;
// end::imports[]

// tag::class[]
@Prototype
public class MapToLocalDateConverter implements TypeConverter<Map, LocalDate> { // <1>

    private final ConversionService  conversionService;

    public MapToLocalDateConverter(ConversionService conversionService) { // <2>
        this.conversionService = conversionService;
    }

    @Override
    public Optional<LocalDate> convert(Map propertyMap, Class<LocalDate> targetType, ConversionContext context) {
        Optional<Integer> day = conversionService.convert(propertyMap.get("day"), Integer.class);
        Optional<Integer> month = conversionService.convert(propertyMap.get("month"), Integer.class);
        Optional<Integer> year = conversionService.convert(propertyMap.get("year"), Integer.class);
        if (day.isPresent() && month.isPresent() && year.isPresent()) {
            try {
                return Optional.of(LocalDate.of(year.get(), month.get(), day.get())); // <3>
            } catch (DateTimeException e) {
                context.reject(propertyMap, e); // <4>
                return Optional.empty();
            }
        }

        return Optional.empty();
    }
}
// end::class[]
